Ray-Path geometries by paths (PDF)
and by shots (PDF) and travel time plots (PDF) for shots 4, 9, 10, 11, 12 on the West-East line (black are picked arrivals,
red are best fitting corresponding arrivals for velocity model).

Travel-Time picks on top of seismic refrection lines plotted from West to East. Note the time
axis has a reduced velocity of 8km/sec :